80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package main
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import (
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"context"
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"fmt"
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"log"
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"os"
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"os/signal"
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"syscall"
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"gitlab.com/gomidi/midi/v2"
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_ "gitlab.com/gomidi/midi/v2/drivers/rtmididrv"
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)
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const (
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serviceName = "midi-request-trigger"
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serviceDescription = "Takes trigger MIDI messages by HTTP requests and trigger HTTP requests by MIDI messages"
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serviceVersion = "0.1"
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)
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// App is the global application structure for communicating between servers and storing information.
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type App struct {
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flags *Flags
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config *Config
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http *HTTPServer
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}
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var app *App
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func main() {
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app = new(App)
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app.ParseFlags()
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app.ReadConfig()
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app.http = NewHTTPServer()
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// Make sure midi drivers are closed when the app closes.
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defer midi.CloseDriver()
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// If no routers defined, or request to list devices.
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if app.flags.ListMidiDevices || len(app.config.MidiRouters) == 0 {
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// If no routers are defined, print notice about configuring one.
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if len(app.config.MidiRouters) == 0 {
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log.Println("No routers configured, please configure one.")
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}
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// Print available devices.
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fmt.Printf("MIDI in ports\n")
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fmt.Println(midi.GetInPorts())
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fmt.Printf("\n\nMIDI out ports\n")
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fmt.Println(midi.GetOutPorts())
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fmt.Printf("\n\n")
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return
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}
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// Connect to each router and and setup HTTP handlers.
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for _, router := range app.config.MidiRouters {
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router.Connect()
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for _, trig := range router.RequestTriggers {
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app.http.mux.HandleFunc(trig.URI, router.Handler)
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}
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}
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// Setup context with cancellation function to allow background services to gracefully stop.
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ctx, ctxCancel := context.WithCancel(context.Background())
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// Start listening on HTTP server.
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app.http.Start(ctx)
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// Monitor common signals.
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c := make(chan os.Signal, 1)
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signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
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// Wait for a signal.
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<-c
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// Stop HTTP server.
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ctxCancel()
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// Disconnect all MIDI listeners.
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for _, router := range app.config.MidiRouters {
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router.Disconnect()
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}
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}
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